Improvement in paper-cutting and scoring machines



4 l VGEoRGEATx-:s Improvement'in Paper Cutting and Scoring Machines. N0. 120,69. 'L' 23 m 1 Patente-d Nov. 7,187l.

UNITED STATES PATENT FFICE.

GEORGE BATES, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN PAPER-CUTTING AND SCORING MACHINES.

Specication forming part of Letters Patent No. 120,697, dated November 7, 1871.

To all whom it may concern:

Be it known that I, GEORGE BATES, of Philadelphia, county of Philadelphia, State of Pennsylvania, have invented an Improvement in Ma chines for Cutting and Scoring Straw-Board, Ste., of which the following is a specification:

My invention consists of an improvement, too fully explained hereafter to need preliminary explanation, in cutting and scoring machines; the main object of the said improvement being to enable the brackets which support the scoringknives to be raised and lowered at pleasure, and secured after adjustment.

Figure 1 is a vertical section of the upper portion of a cutting and scoring machine, with my improvements 5 Fig. 2, a side view of Fig. 1; Fig. 3, a plan view; and Fig. 4, an enlarged sectional view of the device which forms the main feature of my invention.

A and Al are portions of the opposite side frames of the machine, in suitable bearings, in which turn the two rollers t and d', the latter serving to direct the board placed on the table b to the cutting and scoring devices. A roller, d, turns in the opposite side frames, and immediately above this roller are the scoring-knives c, carried by brackets D fitted to and rendered adjustable on a bar, B, in amanner particularly referred to hereafter, this bar being secured at its opposite end to the side frames of the machine. G and G are the cutting-rollers, each carrying as many circular and Vadjustable knives as may be required. The several rollers G G and d are secured together` in a manner which will be clearly understood by reference to Fig. 2.

The machine is, with the exception of the devices for adjusting the scoring-knives, similar to that for which Letters Patent were granted to me January 31, 1871, the graduated bar h .for determining the proper adjustment of the scoringknives being also shown in that patent. It will `be unnecessary, therefore, to give a minute description of the operation of the machine. It will sufce to remark that a board placed on the table I) is directed to the roller d, where it is scored by the knives e, the board passing to the rollers G and G by the combined action of the knives on which the board is severed into scored strips.

My present' improvement relates to a device for the accurate adjustment and steady securing ofthe brackets which carry the scoring-rolls; and this device will be best understood by reference to the views, Fig. 4, where D is one ofthe brackets arranged to embrace the bar B, and carrying the scoring-wheel e. A set-screw, m, passing through the top of the bracket, bears on the top of the bar B, and against the under beveledside n of the bar bears a taper key, F, which caube tightened by a nut, t, in a manner which requires no explanation.

When both set-screw m and key F are tightened the bracket will be securely attached to the bar, the beveled under side of which prevents all possibility of lateral play of the bracket or any yielding of the same in any direction.

It is quite as important, however, that the bracket should admit of nice adjustability as it is that it should be secure and steady after adjustment; for the cutting-edges of the knives must be at a determined distance from the roll which supports the boards while they are being scored by the knives. It will be evident that this nice adjustment can be accomplished by the set-screw m and key F, by the proper manipulation of which the bracket, and with it the scoring-knife e, can be raised and lowered at pleasure, and secured after adjustment.

I claim- The bracket D, with its key F and set-screw m, the whole being adapted to the bar B, substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of two sub Witnesses:

i `Wifi. A. STEEL,

JOHN K. RUPERTUS. (109) 

